This is the small presentation on Linq to Sql, explaining about various things like - "What is LINQ", "How LINQ works", etc...

1. LINQ TO SQL

2. AGENDA
• INTRODUCTION TO LINQ
• LINQ AND .NET FRAMEWORK
• What is Data Context Object?
• Working of LINQ.
• LINQ TO SQL (WITH EXAMPLES)

3. INTRODUCTION TO LINQ
• LINQ stands for Language Integrated Querying.
• Language Integrated Querying (LINQ) is Microsoft’s first
attempt to integrate Queries into a Language.
• Model which overcomes the traditional approach to access
data.
• Visual Studio provides IntelliSense Features and also integrated
debugger to debug queries.
• LINQ can interact with any kind of data source and hence reduces
the headaches of learning new techniques.

4. LINQ and Dot Net Framework
C# 3.0 VB 9.0 OTHERS
DOT NET LANGUAGE INTEGRATED QUERY - LINQ
LINQ TO LINQ TO LINQ TO LINQ TO
LINQ TO SQL
COLLECTIONS DATASET XML ENTITIES
OBJ
1
XML
OBJ OBJ FILE
2 3
OBJECTS DATABASES XML

5. What is DataContext Object?
• DataContext is a Class, which helps creating a connection with
the database.
• It represents the Tables and the Stored Procedures we created in
the database.
• Helps to create and delete a Database. Provides
CreateDatabase() and DeleteDatabase() functions.
• It submits the information sent using Objects and make changes
in the database.

7. Working of LINQ
• Sending data from Application to the database is a 2 step process
in Linq.
• Database Operation is done by Data Context Object. Data is
transferred from the Entity to the DataContext Object.
• LINQ provides “InsertOnSubmit()”, “DeleteOnSubmit()” to do the
in-memory operations.
• For applying the changes in the physical database, the
“SubmitChanges()” has to be called.

9. LINQ TO SQL EXAMPLE

10. Bibliography
• http://www.codeproject.com/Articles/33900/LI
NQ-FAQ-for-Newbie-s
• http://www.codeproject.com/Articles/38056/LI
NQ-FAQ-Part-2
• http://www.codeproject.com/Articles/38010/C
RUD-Operations-using-LINQ-Entities
• http://www.codeproject.com/Articles/32004/S
ALT-and-PEPPER-3-TIER-and-LINQ#Inconsistent
DAL component

11. THANK YOU